Quiz Hard 2 Categories Quizzes 0 Quiz Hard 2 1 / 30 Methods used to ascent the series of aldoses is known as Kilian synthesis Ruff's methods Weerman's reaction Wohl's synthesis 2 / 30 Enzymatic action is best at a fixed Both of these None of these Temprature pH 3 / 30 pick out the incorrect statement for SO2 it turns starch iodate paper blue It does not react with chlorine presence of charcoal It turns filter paper moistened acidified K2Cr2O7 It decolourises acidified KNbO4 solution 4 / 30 Which is major component of Bordeaux Mixture Sodium chloride magnesium sulphate Copper sulfate calcium chloride 5 / 30 Which statement is false? Activation energy is a kinetic quantity rather than a thermodynamic quantity. If a reaction is thermodynamically nonspontaneous, it will not occur spontaneously If a reaction is thermodynamically spontaneous it may occur slowly If a reaction is thermodynamically spontaneous it may occur rapidly. If a reaction is thermodynamically spontaneous, it must haven no activation energy. 6 / 30 The point at which the reaction is observed to be complete is called The equivalence point The triple point The equilibrium point The end point 7 / 30 Estimation in protien is generally carried out by method Kjeldahl's method Duma's mthod Carius method Vn Slyke's mthod 8 / 30 What is considered as the general purpose oldest type and widely used cast iron? Gray iron Ductile iron Malleable iron Alloy iron Black iron 9 / 30 The hybridization of S in SO2 is sp3 sp2 sp dsp2 10 / 30 Which of the following phenomenon are driven by solar energy? none production of biomass water cycle winds all these 11 / 30 Pick out the incorrect statement regardits, ozone It causes the tailing of mercury It does not react with KOH 03 is an unstable, dark-blue diamagnetic gas The central oxygen in O3 ts hybridized 12 / 30 Suppose the activation energy of a certain reaction is 250 kJ/mol. If the rate constant at 300 K is Ici and the rate constant at 320 K is ki, then the reaction is times faster at 320 K than at 300 K. 15 3*10-28 3*10-29 525 0.067 13 / 30 Which of the following alloys contains Cu and Zn? Brass Gun-metal type metal Bronze 14 / 30 SoO2 exist in the form All above Beta SO3 alpha SO3 Gamma SO3 15 / 30 Fertilizers are classified into four major categories three major categories none of these Note major catngories two major categories 16 / 30 In which of the following characteristics doo hydrogen resemble halogens? Hydrogen in the lightest gas H atoms contemn one electron each Hydrogen has three isotopes Hydrogen forms ionic hydrides with alkali metal 17 / 30 The number of bonds formed by the central atom is called its Valence number Coordination number Avogadro's number Complex number 18 / 30 which one of the following statementy is false about transition metals? They show variable valency They form complexes they form coloured ions All transition metal compound are paramagnetic 19 / 30 Which of the following is moat soluble in water? BaSO4 MgSO4 SrSO4 CaSO4 20 / 30 The pH of the 0.0032 M H2SO4 is 4 1 3.2 2.198 21 / 30 What is the lowest-temperature diffusion-hardening process and does not require a quench? melting tempering carburizing heat-treating nitriding 22 / 30 The common oxidation state of lanthanides is? 4 3 1 2 23 / 30 Glucose and mannose may be obtained by KIlani synthesis from D-ribose D-xylose D-lyxose D-arabinose 24 / 30 Solar energy mainly light originates from sun due to Addition reactions Substitution reactions Thermonuclear reactions Displacement reactions 25 / 30 A theoretical plate in chromatography is represented by how many equilibriuni step 2 1 4 all these 3 26 / 30 Variable actions states is shown by normal elements non-metallic elements transition elements metallic elements 27 / 30 Though Fructose is laevorotatory yet its name is written as D-fructose,this "D" prefix indicates Mutarotation Generic relationship with d-glucose Specific rotation Generic relationship with d-glyceraldehyde 28 / 30 Hydrogen at the moment of its generation (newly bornhydrogen) is generally called Protium Nascent hydrogen Heavy hydrogen. Atomic hydrogen 29 / 30 Which of the following statements is not related with the advantages of TLC? Fluorescence can be introduced Different detectors can be used A variety of adsorbents can be used The thickness of adsorbent can be varied The method is rapid 30 / 30 What is the effect of aluminium in cast iron? To affect machinability, ductility. and shrinkage depending on form both A and b to increase hardness above 0.5% To reduce hardness by combining with sulfur below 0.5% to dioxide molten cast iron Your score is Share: Quiz Dad Previous post Quiz Hard 1 October 1, 2022 Next post Quiz Hard 3 October 1, 2022 You may also like Quiz Hard 5 1 October, 2022 Quiz Hard 4 1 October, 2022 Quiz Hard 3 1 October, 2022